As you know in Levely we saw "Im" which sat in the throne of the world. In the exact time in reverie there was only one person with a cloak in Levely-Shanks. Ok i know this sounds stupid but hear me out. The five elders spoke with Shanks in Levely. And they said "Since it's you we made time". It may be because Shanks is a Yonko but i believe Oda could've done this for giving Luffy a reason to fight with Shanks. Luffy will probably fight all 4 Yonkos and Shanks is one too. But Luffy loves Shanks how can he fight him? Shanks wouldn't let him pass and let him become the pirate king. So i think Oda will do something like make Im attack the Strawhats or something like that and make Luffy furious. I forgot to write this when i posted it but it is especially the thing that Shanks could talk to the elders andthe elders not trying to kill him is really suspicious.
Ik this was a stupid text but is this possible in your opinion?